Italian Standard
according to CEI-UNEL 35011 code Designation

Conductor construction
F    flexible copper conductor to IEC 60228 class 5
R    stranded copper conductor to IEC 60228 class 2
U    solid copper conductor to IEC 60228 class 1
Insulation or sheath
E    polyethylene
E4    XLPE cross-linked polyethylene
G4    silicone rubber
G5    ethylene-propylene rubber based compound
G10    cross-linked low smoke zero halogen insulation compound
R    70°C PVC general use
R2    70°C PVC insulation type R2 to CEI 20-11
R5F    FEP fluoropolymer
R5M    MFA fluoropolymer
R5P    PFA fluoropolymer
R7     90° PVC
M1     low smoke zero halogen thermoplastic compound
Screen
H    aluminium tape screen
H1    copper tape or copper wire spiral screen
H2    copper wire braid
H5    longitudinal aluminium tape bonded to a sheath
Metallic protection
A    galvanized steel wire braid armour
F    steel wire armour
L    lead alloy sheath
N    galvanized steel tape armour
P    lead sheath
Z    steel flat wire armour
Cable shape
O    external round shape
D    external flat shape
X    cores twisted

 Secondo tabella CEI UNEL 35011-36011 (ove applicabile)
Designation groups
   
Designation   
Symbol

Conductor type

Copper    None
Aluminium    A

Conductor form

Rigid round, solid    U
Rigid round stranded    R
Flexible round stranded    F
Highly flexible round stranded    FF
Extra flexible round stranded or special construction    EF

Insulation material

PVC for operating temperature of 70°C    R
PVC for operating temperature of 70°C of superior quality (anti-aging)    R2
PVC for operating temperature of 90°C    R7
Synthetic rubber for temperature of 60°C    G
High modulus ethylene propylene rubber    G7
Elastomeric compound with low smoke, toxic and corrosive gas emission    G9
Elastomeric compound with low smoke, toxic and corrosive gas emission    G10
Thermoplastic compound with low smoke, toxic and corrosive gas emission    M9
Plastic material with low toxic and corrosive gas emission (36011)    M
Cross-linked compound with low smoke, toxic and corrosive gas emission    G21
Thermoplastic polyethylene    E
Cross-linked polyethylene for temperatures of 85°C    E4
One or more mica tape strips or closed glass braid    T

Cable shape

Cores arranged for round cable    O
Cores laid parallel for flat cable    D
Helically wound cores    X

Metallic coatings
(shielding and armouring)

Shield made of aluminium or metallised paper tape    H
Copper tape, flat strip, or wire shield    H1
Stranded or braided copper shield    H2
Double-strand or braided copper shield    H3
Concentric copper conductor    C
Concentric aluminium conductor    AC
Stranded or braided metallic armouring    A
Steel wire armour    F
Flat steel wire armour    Z
Steel tape armour    N

Jacket material

TM1, TM2, RZ type PVC    R
EZ type linear polyethylene    E
Cross-linked polyethylene    E4
Synthetic rubber    G
Polychloroprene    K
Thermoplastic compound with low smoke, toxic and corrosive gas emission    M1
Elastomeric compound with low smoke, toxic and corrosive gas emission    M2
Elastomeric compound with low smoke, toxic and corrosive gas emission    M3
Plastic material with low toxic and corrosive gas emission (36011)    M
Cross-linked compound with low smoke, toxic and corrosive gas emission    M21

Designation groups
   
Designation Symbol

Conductor type
Copper    None
Aluminium    A

Conductor form
Rigid round, solid    U
Rigid round stranded    R
Flexible round stranded    F
Highly flexible round stranded    FF
Extra flexible round stranded or special construction    EF

Insulation material
PVC for operating temperature of 70°C    R
PVC for operating temperature of 70°C of superior quality (anti-aging)    R2
PVC for operating temperature of 90°C    R7
Synthetic rubber for temperature of 60°C    G
High modulus ethylene propylene rubber    G7
Elastomeric compound with low smoke, toxic and corrosive gas emission    G9
Elastomeric compound with low smoke, toxic and corrosive gas emission    G10
Thermoplastic compound with low smoke, toxic and corrosive gas emission    M9
Plastic material with low toxic and corrosive gas emission (36011)    M
Cross-linked compound with low smoke, toxic and corrosive gas emission    G21
Thermoplastic polyethylene    E
Cross-linked polyethylene for temperatures of 85°C    E4
One or more mica tape strips or closed glass braid    T

Cable shape
Cores arranged for round cable    O
Cores laid parallel for flat cable    D
Helically wound cores    X

Metallic coatings(shielding and armouring)
Shield made of aluminium or metallised paper tape    H
Copper tape, flat strip, or wire shield    H1
Stranded or braided copper shield    H2
Double-strand or braided copper shield    H3
Concentric copper conductor    C
Concentric aluminium conductor    AC
Stranded or braided metallic armouring    A
Steel wire armour    F
Flat steel wire armour    Z
Steel tape armour    N

Jacket material
TM1, TM2, RZ type PVC    R
EZ type linear polyethylene    E
Cross-linked polyethylene    E4
Synthetic rubber    G
Polychloroprene    K
Thermoplastic compound with low smoke, toxic and corrosive gas emission    M1
Elastomeric compound with low smoke, toxic and corrosive gas emission    M2
Elastomeric compound with low smoke, toxic and corrosive gas emission    M3
Plastic material with low toxic and corrosive gas emission (36011)    M
Cross-linked compound with low smoke, toxic and corrosive gas emission    M21